Physical Science. Second Semester Review Concepts

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Gertrude Gallagher
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1 Physical Science Second Semester Review Concepts

2 You may make a reminder sheet from the reviews that have been posted on our class web page. You may not type it though, it must be hand written. You must also turn it in after the exam. You may not share nor use someone else s

3 The distance traveled by an object divided by the time it takes to travel that distance is called

4 Friction is defined as the

5 If the net force on an object is zero, then the object has

6 When objects are moved further apart from each other, the force of gravity between them

7 Acceleration is defined as the change in velocity divided by

8 A boy pushes on a parked car with a force of 200 N. The car does not move. How much work does the boy do on the car?

9 A machine is a device that

10 What is the gravitational potential energy of a 54 kg box that is 8.0 m above the ground?

11 An object weighing 75 N is dropped from the top of a building and falls a distance of 28 m to the ground. How much work does gravity do on the object from the time it is dropped to the time it hits the ground?

12 A weightlifter presses a 400 N weight 0.5 m over his head in 2 seconds. What is the power of the weightlifter?

13 An inclined plane

14 As the kinetic energy of the molecules in a substance increases, the

15 Energy from the sun reaches Earth by

16 Water waves transfer

17 The frequency of a sound wave determines?

18 The transfer of energy as heat caused by the collision of molecules is called?

19 Convection currents rise in air because?

20 Sound waves are waves, a type of wave.

21 The differences in color in visible light, such as those in a rainbow, are caused by differences in?

22 The SI unit of resistance is the?

23 There is a potential difference of 12 V across a resistor with 0.25 A of current in it. The resistance of the resistor is?

24 What happens to the resistance of a superconductor when its temperature drops below the critical temperature?

25 Magnetic fields are produced by?

26 Groups of atoms that align to form small, magnetized regions in a material are?

27 A resistor has a resistance of 280 Ω. How much current is in the resistor if there is a potential difference of 120 V across the resistor?

28 What is the potential difference across a resistor that dissipates 5.00 W of power and has a current of 5.0 A?

29 A device that converts electrical energy into mechanical energy is a(n)?

30 The strength of the magnetic field of a solenoid can be increased by?

31 Potential difference is measured in?

32 A train of waves is moving at a speed of 30 m/s. The frequency of the waves is 10 Hz. What is the wavelength?

33 A magnetic field around a current-carrying wire forms?

34 Every charged particle produces a(n)?

35 A device that protects a circuit from current overload is called a?

36 Light waves

37 Sound waves

38 What are the units of work?

39 A weightlifter presses a 400 N weight 0.5 m over his head in 2 seconds. What is the power of the weightlifter?

40 Power is calculated by dividing work by?

41 The formula for calculating kinetic energy can be written as?

42 A quantity that measures the rate at which work is done is called?

43 A 10.0 kg dog chasing a rabbit north at 6.0 m/s has a momentum of?

44 The weight of an object can be calculated by multiplying mass by?

45 Terminal velocity is defined as?

46 The medium seismic waves travel through is?

47 The frequency of a sound wave determines?

48 A wave front is?

49 The matter through which a wave travels is called the?

50 The lowest point of a wave is called the?

51 A wave with a frequency of 0.5 Hz and a speed of 10 m/s has a wavelength of?

52 A wave that causes the particles of the medium to vibrate parallel to the direction the wave travels is called a(n)?

53 When there is an equal amount of positive and negative charges on an object, the object is?

54 The electric force between charged objects is?

55 Current is the rate at which charges move through a(n)?

56 A 13-Ω resistor has A of current in it. What is the potential difference across the resistor?

57 An electric toaster has a power rating of 1,100 W at 110 V. What is the resistance of the heating coil?

58 An example of a naturally occurring magnetic rock is?

59 A compass needle naturally points toward?

60 Earth s magnetic poles are located in?

61 A magnetic field around a current-carrying wire forms?

62 When the loop of wire in an AC generator rotates halfway,.

63 Both electric and magnetic fields in an electromagnetic wave are?

64 How does a compass indicate direction?

65 What do magnetic force, gravitational force, and force between electric charges have in common?

66 How are generators different from electric motors?

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5. Positive charges one another.

1. Electric field lines indicate A. Both direction and relative strength B. Neither direction nor strength 5. Positive charges one another. A. Repel B. Attract 2. Whether or not charges will move in a